[Hackrf-dev] MGA81563TR1G alternate

[Tony Hagen]

Hi,

I am looking for an alternate part # of u25 and u13 - the original part # is 
MGA81563TR1G is a rf amplifier

in my hackrf I damaged both with static antenna charge



73
Tony
-----Original Message----- 
From: hackrf-dev-request at greatscottgadgets.com
Sent: Saturday, September 22, 2018 10:58 AM
To: hackrf-dev at greatscottgadgets.com
Subject: HackRF-dev Digest, Vol 73, Issue 8

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Today's Topics:

   1. Hackrf One output impedance (Gavin Jacobs)
   2. Re: Hackrf One output impedance (Michael Ossmann)


----------------------------------------------------------------------

Message: 1
Date: Sat, 22 Sep 2018 00:32:55 +0000
From: Gavin Jacobs <apriljunkbox at hotmail.com>
To: "hackrf-dev at greatscottgadgets.com"
<hackrf-dev at greatscottgadgets.com>
Subject: [Hackrf-dev] Hackrf One output impedance
Message-ID:
<MWHPR2201MB1392E64374AF829AA6B1AD7DC6110 at MWHPR2201MB1392.namprd22.prod.outlook.com>

Content-Type: text/plain; charset="utf-8"

What is the output impedance when transmitting at 147.42 MHz with and 
without the output amplifier?

I?ve built an RF amplifier to boost the output about 26 dB, but with no 
signal it oscillates. The data sheet suggests it is probably due to an 
impedance mismatch between the Hackrf and the amp. So, can anyone say 
definitely the impedance of the Hackrf?

Thanks,
Jake

------------------------------

Message: 2
Date: Fri, 21 Sep 2018 18:40:32 -0600
From: Michael Ossmann <mike at ossmann.com>
To: Gavin Jacobs <apriljunkbox at hotmail.com>
Cc: "hackrf-dev at greatscottgadgets.com"
<hackrf-dev at greatscottgadgets.com>
Subject: Re: [Hackrf-dev] Hackrf One output impedance
Message-ID: <20180922004032.GA24328 at ossmann.com>
Content-Type: text/plain; charset=utf-8

The output impedance is 50 ohms.

Mike


On Sat, Sep 22, 2018 at 12:32:55AM +0000, Gavin Jacobs wrote:
>
> What is the output impedance when transmitting at 147.42 MHz with and 
> without the output amplifier?
>
> I?ve built an RF amplifier to boost the output about 26 dB, but with no 
> signal it oscillates. The data sheet suggests it is probably due to an 
> impedance mismatch between the Hackrf and the amp. So, can anyone say 
> definitely the impedance of the Hackrf?
>
> Thanks,
> Jake
> _______________________________________________
> HackRF-dev mailing list
> HackRF-dev at greatscottgadgets.com
> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev


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